Evaluation of seepage flow during installation of suction caisson foundation in homogeneous sand and sand overlaying inclined clay

Koohyar Faizi, Aryan Hojjati, Asaad Faramarzi, Samir Dirar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Suction caissons have been widely considered as foundations in offshore engineering. Installation of a suction caisson foundation in seabed soil is affected by seepage conditions. This study aims to investigate the seepage behavior during caisson installation in sand and sand overlaying inclined clay. Small-scale 1g model tests and numerical studies using finite-element analysis were used to determine the variation and distribution of excess pore water pressure generated by suction in a homogeneous sand. A series of three-dimensional (3D) finite-element models were also undertaken in which installation is considered through sand into an inclined clay layer to simulate the behavior of seepage. The results of this study, which may not be valid for larger scale models, indicate that the inclined impermeable layer (clay) below the sand is affecting the flow in sand, and the influence is dependent on the distance of the impermeable layer to the caisson tip.

Original languageEnglish
Title of host publicationGeo-Congress 2022
Subtitle of host publicationDeep Foundations, Earth Retention, and Underground Construction
EditorsAnne Lemnitzer, Armin W. Stuedlein
PublisherAmerican Society of Civil Engineers (ASCE)
Pages309-318
Number of pages10
ISBN (Electronic)9780784484029
DOIs
Publication statusPublished - 17 Mar 2022
Event2022 GeoCongress: State of the Art and Practice in Geotechnical Engineering - Deep Foundations, Earth Retention, and Underground Construction - Charlotte, United States
Duration: 20 Mar 202223 Mar 2022

Publication series

NameGeotechnical Special Publication
PublisherAmerican Society of Civil Engineers (ASCE)
Number332
ISSN (Print)0895-0563

Conference

Conference2022 GeoCongress: State of the Art and Practice in Geotechnical Engineering - Deep Foundations, Earth Retention, and Underground Construction
Country/TerritoryUnited States
CityCharlotte
Period20/03/2223/03/22

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Fingerprint

Dive into the research topics of 'Evaluation of seepage flow during installation of suction caisson foundation in homogeneous sand and sand overlaying inclined clay'. Together they form a unique fingerprint.

Cite this